A handy person from Charlotte, North Carolina says:
October 24, 2019
Hello,
I appreciate if you could help me with finding these parts. I think they are 15-177 coil balances, but I am not sure. I need to buy 2 of them.
Best Regards,
Casey from SWISCO responded:
October 29, 2019
Your part does look close to our 15-177 coil balance shoe. You would just need to remove it completely from the window and match up your measurements with ours to confirm it is a match.